Abstract:

This study has studied the performance of the Organic Rankine Environment (ORC) system for geothermal sources at a temperature range of 50-100°C. Depending on the variable geothermal source temperature for four different fluids (R141b,R123,R245fa R134a), the first and second law outcomes of the ORC system are determined, the net working values that can be produced for the unit geothermal fluid flow. The highest first and second law outcomes were obtained for the R141b fluid. The most net business circuit fluid is calculated for R134a due to the high debt value. For R141b, the exergy destruction amounts and percentage values of each system element are determined. For each element that forms the system, the exergy destruction has increased with increased temperature. Among the system elements, the maximum exergy destruction in the geothermal source temperature range of 50-85°C was observed in the generator. This was followed by the turbine, turbine and pump, respectively. At temperatures above 85°C, the exergy destruction in the turbine has gone ahead of the coating in the ranking.

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